| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1991 | 978-1-56365-000-0 | Washington Researchers Ltd | How to Find Financial Information (Management Solution Series) |
| 2000 | 978-1-56365-011-6 | Washington Researchers | How to Find Information About Companies 1992/93 |
| 1984 | 978-1-56365-019-2 | Kaiser Associates Inc. | Understanding the Competition: A Practical Guide to Competitive Analysis |